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Denys Fedoryshchenko
2023-08-31 09:49:19 +03:00
parent 3560a73c92
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Juniper.md
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@@ -386,8 +386,11 @@ First quickly go thru list of alarms and warnings, if you see any of them, you h
Second check values, to have estimation. Second check values, to have estimation.
* Receiver signal average optical power : 0.4357 mW / -3.61 dBm * Receiver signal average optical power : 0.4357 mW / -3.61 dBm
Means the signal is good, and the SFP is working properly. Usually signal should vary between " Laser rx power high warning threshold : 0.7943 mW / -1.00 dBm" and
"Laser rx power low warning threshold : 0.0631 mW / -12.00 dBm". Which means if it is below -12dBm or above -1dBm, you have a problem. Too low signal usually means either problem with SFP degradation or fiber attenuation(damaged?). Too high signal usually means too much light is coming to the receiver, which can be caused by too high power SFP TX on other side + too short fiber for such type of SFP, this might cause receiver burnout. Means the signal is good, and the SFP is working properly.
Usually signal should vary between " Laser rx power high warning threshold : 0.7943 mW / -1.00 dBm" and "Laser rx power low warning threshold : 0.0631 mW / -12.00 dBm". Which means if it is below -12dBm or above -1dBm, you have a problem. Too low signal usually means either problem with SFP degradation or fiber attenuation(damaged?). Too high signal usually means too much light is coming to the receiver, which can be caused by too high power SFP TX on other side + too short fiber for such type of SFP, this might cause receiver burnout.
You might also watch out for "borderline" values, which are close to the threshold, this might indicate that you have a problem, but it is not critical yet. You might also watch out for "borderline" values, which are close to the threshold, this might indicate that you have a problem, but it is not critical yet.
* Laser bias current : 8.370 mA * Laser bias current : 8.370 mA